Setchell Carlson 553

[radiotvnut]

Originally Posted by JoeNewberry

There are paper and electrolytic capacitors in them that deteriorate and fail with age. They go off value, become open, or short out. When that happens, all kinds of havoc can be wrought on the still working parts of the set when power is applied. As tempting as it is, it's never a good idea to turn on an old TV or radio until it has had its old capacitors replaced.

I've actually seen TV's and radio's with burnt up power transformers and other expensive and/or NLA parts because an old capacitor shorted after the set had been powered off for years. Many of these old sets had little-to-no short circuit protection and when something goes wrong, it can be a real headache. Also, I've seen old capacitors that were working fine one minute and go "BOOM" the next. That's why I take no chances with electronic equipment from the tube era. I usually replace all paper and electrolytic caps before power up.

You probably have not caused any serious damage to your set; but, I wouldn't even turn on the radio again until you either find it a new home or decide to restore it.